I love all the input!! Feed me Seymour!! Keep all this knowledge coming!!
Here's what I've found thus far. I change the source for my pressure sensor to the UIM front top port and that did make a significant difference. But I still had a low RPM at idle and if I fluttered the RPM it would still hesitate and bog down.
Throttle cable was part of the problem. It had a lot of slack on it at the back of the TB. I tightened that up and that combined with changing the source for the pressure sensor has made a world of difference. It lops a little bit at idle but idles between 500-900ish idle. I'd raise RPMs up to 2-3k and let them drop back down and idle point would be a little different each time.
It still does a very small hesitation when I first flutter the RPM. Associated with that little hesitation I can hear something out of the ordinary coming from the engine. Sounds like something opening or closing, possibly a vac/pressure source...or maybe the throttle butterflies. It is always associated with the hesitation and only happens if I flutter the throttle. I was working alone so I couldn't stick my head in the engine compartment while someone else fluttered the throttle, but tomorrow I can get a helper.
I did not check timing today because I could not remember which timing marks were which and didn't have a spare main pulley to compare. I had mine powdercoated and then repainted the marks myself. IIRC first one is red/trailing, second one is yellow/leading?
One other thing very strange which may or may not be related to the problems. I have a huge amount of exhaust spray of soot and moisture. It was doing this after the initial rebuild and is still doing it. When I play with the RPMs and get them bouncing up and down, not higher than say 3k I have about a 4-5 spray.
I didn't get a close enough pic, but it's moisture with soot. I tasted the moisture and it's nothing but water...no coolant. Where is the moisture coming from? Is all of that from condensation in the exhaust?
04-27-2013, 06:50 PM
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